Abstract: A method for analyzing and optimizing security systems is disclosed. A diagram is prepared which organizes and interrelates elements of the security system. The elements of the security system are tabulated in the diagram. Probabilities of detecting intrusion and neutralizing it are calculated and arranged in the diagram along an event tree. The effectiveness of protection against intrusion is readily determinable and quantifiable for any intrusion scenario by the arrangement of the security elements and the probabilities of detection.

Abstract: The system includes a vestibule and a plurality of emergency exits interconnecting the secure area with the outside environment. The vestibule comprises a pair of security doors and the emergency exits comprise security doors having locking means and means for disabling the locking means in response to any one of several preselected egress corroborating events that are not likely to be associated with adversarial activity. The various preselected events may include non-emergency situations such as a request to leave or disable made by two persons within the secure area, a request to leave or disable made by a single person within the secure area plus security guard affirmation, and a request to leave or disable made by a single person within the secure area plus the expiration of a time delay triggered by the request.

Abstract: A system for delivering a fluid from a puncture in a pressurized vessel and particularly for delivering an entry retardant into or adjacent a secure space.

Abstract: A system for delivering a fluid from a puncture in a pressurized vessel and particularly for delivering an entry retardant into or adjacent a secure space.